#4-15
# import  copy
# dictionary = {'卷心菜':'cabbage','午餐':['lunch','nooning']}
# dictionar1 = dictionary
# dictionar2 = dictionary.copy()
# dictionar3 = copy.deepcopy(dictionary)
# dictionary['卷心菜'] = 'pamphrey'
# dictionary['午餐'].remove('nooning')
# print('dictionary = ',dictionary)
# print('dictionar1',dictionar1)
# print('dictionar2',dictionar2)
# print('dictionar3',dictionar3)
#4-16
# dictionary = {
#     '卷心菜': 'cabbage',
#     '午餐': 'lunch',
#     '机器人': 'robot',
#     '天空': 'sky',
#     '花': 'flower'
# }
# print('中英文字典所有中文词组及其对应的英文单词：')
# for item in dictionary.items():
#     print(item)
# print('中英文字典中所有中文词组：')
# for chinese in dictionary.keys():
#     print(chinese, end=" ")
# print('\n中英文字典中所有英文单词：')
# for english in dictionary.values():
#     print(english, end=" ")
